2. A second assumption in this experiment relates to the specific heat capacity

Q: 2. A second assumption in this experiment relates to the specific heat capacity

Q2 Apply heat equation for the "solution" of HCl mass = 28.9 g C = of water dT = from dat agiven Qsolution = m*C*(Tf-Ti) Qsolution = 28.9*4.184*(32-20.4) Qsolution = 1402.644 J Qsolution = 1.402 kJ positive, since it is increasing in temperature

ID: 546381 • Letter: 2

Question

2. A second assumption in this experiment relates to the specific heat capacity of the solution. We will assume the specific heat capacity of the solution is dominated by the specific heat of water. As a result, a value of 4.184 J(g °C) will be used for the specific heat capacity of the solution IfMgO is added to 28.9 g of 3M HCI solution in a coffee cup calorimeter, the temperature of the resulting solution increases from 20.4 °C to 32.0 °C. With the assumption above in place, what is qsoln for this reaction. Record your response in kJ

Explanation / Answer

Apply heat equation for the "solution" of HCl

mass = 28.9 g

C = of water

dT = from dat agiven

Qsolution = m*C*(Tf-Ti)

Qsolution = 28.9*4.184*(32-20.4)

Qsolution = 1402.644 J

Qsolution = 1.402 kJ

positive, since it is increasing in temperature

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2. A second assumption in this experiment relates to the specific heat capacity

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